JPH0819402B2 - Water absorbent resin slurry - Google Patents
Water absorbent resin slurryInfo
- Publication number
- JPH0819402B2 JPH0819402B2 JP22026487A JP22026487A JPH0819402B2 JP H0819402 B2 JPH0819402 B2 JP H0819402B2 JP 22026487 A JP22026487 A JP 22026487A JP 22026487 A JP22026487 A JP 22026487A JP H0819402 B2 JPH0819402 B2 JP H0819402B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- absorbent resin
- slurry
- weight
- resin slurry
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000011347 resin Substances 0.000 title claims description 48
- 229920005989 resin Polymers 0.000 title claims description 48
- 239000002250 absorbent Substances 0.000 title claims description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 38
- 239000002002 slurry Substances 0.000 title claims description 26
- 230000002745 absorbent Effects 0.000 title description 18
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 9
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 7
- 239000002612 dispersion medium Substances 0.000 claims description 6
- 235000011187 glycerol Nutrition 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 3
- 239000005416 organic matter Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 description 7
- 238000004062 sedimentation Methods 0.000 description 7
- 238000002156 mixing Methods 0.000 description 5
- 238000006116 polymerization reaction Methods 0.000 description 5
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 4
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 229920006037 cross link polymer Polymers 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000011837 N,N-methylenebisacrylamide Substances 0.000 description 2
- 239000002202 Polyethylene glycol Substances 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000499 gel Substances 0.000 description 2
- 150000002314 glycerols Chemical class 0.000 description 2
- 229920000578 graft copolymer Polymers 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 description 2
- 229920000058 polyacrylate Polymers 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- -1 polyoxyethylene Polymers 0.000 description 2
- 229920001451 polypropylene glycol Polymers 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 125000000542 sulfonic acid group Chemical group 0.000 description 2
- PQUXFUBNSYCQAL-UHFFFAOYSA-N 1-(2,3-difluorophenyl)ethanone Chemical compound CC(=O)C1=CC=CC(F)=C1F PQUXFUBNSYCQAL-UHFFFAOYSA-N 0.000 description 1
- PRAMZQXXPOLCIY-UHFFFAOYSA-N 2-(2-methylprop-2-enoyloxy)ethanesulfonic acid Chemical compound CC(=C)C(=O)OCCS(O)(=O)=O PRAMZQXXPOLCIY-UHFFFAOYSA-N 0.000 description 1
- LCZVSXRMYJUNFX-UHFFFAOYSA-N 2-[2-(2-hydroxypropoxy)propoxy]propan-1-ol Chemical compound CC(O)COC(C)COC(C)CO LCZVSXRMYJUNFX-UHFFFAOYSA-N 0.000 description 1
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 229920002907 Guar gum Polymers 0.000 description 1
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 1
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- UWHCKJMYHZGTIT-UHFFFAOYSA-N Tetraethylene glycol, Natural products OCCOCCOCCOCCO UWHCKJMYHZGTIT-UHFFFAOYSA-N 0.000 description 1
- DAKWPKUUDNSNPN-UHFFFAOYSA-N Trimethylolpropane triacrylate Chemical compound C=CC(=O)OCC(CC)(COC(=O)C=C)COC(=O)C=C DAKWPKUUDNSNPN-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229940048053 acrylate Drugs 0.000 description 1
- 235000010323 ascorbic acid Nutrition 0.000 description 1
- 229960005070 ascorbic acid Drugs 0.000 description 1
- 239000011668 ascorbic acid Substances 0.000 description 1
- BQMNFPBUAQPINY-UHFFFAOYSA-N azane;2-methyl-2-(prop-2-enoylamino)propane-1-sulfonic acid Chemical compound [NH4+].[O-]S(=O)(=O)CC(C)(C)NC(=O)C=C BQMNFPBUAQPINY-UHFFFAOYSA-N 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 229940105990 diglycerin Drugs 0.000 description 1
- GPLRAVKSCUXZTP-UHFFFAOYSA-N diglycerol Chemical compound OCC(O)COCC(O)CO GPLRAVKSCUXZTP-UHFFFAOYSA-N 0.000 description 1
- SZXQTJUDPRGNJN-UHFFFAOYSA-N dipropylene glycol Chemical compound OCCCOCCCO SZXQTJUDPRGNJN-UHFFFAOYSA-N 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 239000000665 guar gum Substances 0.000 description 1
- 235000010417 guar gum Nutrition 0.000 description 1
- 229960002154 guar gum Drugs 0.000 description 1
- 239000000017 hydrogel Substances 0.000 description 1
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 235000010981 methylcellulose Nutrition 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 229920005604 random copolymer Polymers 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 229940047670 sodium acrylate Drugs 0.000 description 1
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- SONHXMAHPHADTF-UHFFFAOYSA-M sodium;2-methylprop-2-enoate Chemical compound [Na+].CC(=C)C([O-])=O SONHXMAHPHADTF-UHFFFAOYSA-M 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
- 239000000230 xanthan gum Substances 0.000 description 1
- 229920001285 xanthan gum Polymers 0.000 description 1
- 235000010493 xanthan gum Nutrition 0.000 description 1
- 229940082509 xanthan gum Drugs 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、土木工事等に利用できる吸水性樹脂スラリ
ーに関する。更に詳しくは、吸水性樹脂の吸水能力を低
下させることなく、その流動性を改良してポンプ輸送を
可能にする吸水性樹脂スラリーに関する。TECHNICAL FIELD The present invention relates to a water-absorbent resin slurry that can be used in civil engineering work and the like. More specifically, the present invention relates to a water-absorbent resin slurry that improves the fluidity of the water-absorbent resin without lowering its water-absorbing ability and enables pumping.
（従来の技術） 掘削など土木工事の際に、吸水性樹脂を用いて作業性
を改善する試みが行われている。例えばシールド工法に
おいて、吸水性樹脂が間隙水の流入抑制、掘削土砂の搬
送、逸泥防止などの目的で使用されている。(Prior Art) At the time of civil works such as excavation, attempts have been made to improve workability by using a water absorbent resin. For example, in the shield construction method, a water-absorbent resin is used for the purpose of suppressing the inflow of pore water, transporting excavated earth and sand, and preventing sludge.
しかしながら、これらの吸水性樹脂は粉末であるがた
めに、作業現場への移送など取り扱い性に問題がある。However, since these water-absorbent resins are powders, there is a problem in handling such as transfer to a work site.
この問題を解決するために、吸水性樹脂にその重量の
50〜200倍の水を加えて膨潤させ、吸水性樹脂に流動性
を付与してから使用する方法が用いられている。しか
し、この方法は、吸水性樹脂の吸水能力を吸水性樹脂重
量を基準として50〜200倍減少させることであり、好ま
しいものではなかった。In order to solve this problem, the weight of water absorbent resin
A method is used in which 50 to 200 times as much water is added to swell and the fluidity of the water absorbent resin is imparted to the water absorbent resin before use. However, this method is to reduce the water absorption capacity of the water absorbent resin by 50 to 200 times based on the weight of the water absorbent resin, which is not preferable.
また、ポリエチレングリコール等の不活性有機液体に
吸水性樹脂を混合・分散する方法が提案されている。し
かし、この方法は、得られたスラリー中の吸水性樹脂が
沈降し易く、また沈降して生成したケーキが固く容易に
分散できないものとなるために、このスラリーのポンプ
輸送が困難であるという問題点があった。Further, a method of mixing and dispersing a water absorbent resin in an inert organic liquid such as polyethylene glycol has been proposed. However, this method has a problem that pumping of the slurry is difficult because the water-absorbent resin in the obtained slurry tends to settle, and the cake formed by settling is hard and cannot be easily dispersed. There was a point.
（発明が解決しようとする問題点） 本発明者らは、上記問題点を解決すべく鋭意検討した
結果、本発明に到達した。(Problems to be Solved by the Invention) The present inventors have arrived at the present invention as a result of intensive studies to solve the above problems.
したがって、本発明の目的は、吸水性樹脂の吸水能力
を低下させることなくポンプ輸送の可能な吸水性樹脂ス
ラリーを提供することにある。Therefore, an object of the present invention is to provide a water-absorbent resin slurry which can be pumped without reducing the water-absorbing ability of the water-absorbent resin.
（問題点を解決するための手段および作用） 本発明は、水溶性有機物40〜95重量％および水５〜60
重量％からなる分散媒100重量部に吸水性樹脂を５〜300
重量部混合してなる吸水性樹脂スラリーに関する。(Means and Actions for Solving Problems) The present invention relates to a water-soluble organic substance of 40 to 95% by weight and water of 5 to 60%.
5 to 300 parts by weight of water-absorbent resin in 100 parts by weight of dispersion medium
The present invention relates to a water absorbent resin slurry formed by mixing by weight.
本発明における水溶性有機物は、一般式（１） （ただし、ｌおよびｍはそれぞれ独立に０または１〜1,
000の整数、ｌ＋ｍは１〜1,000の整数である。） で表わされるグリコール系化合物および一般式（２） （ただし、ｎは１〜20の整数である。） で表わされるグリセリン系化合物から選ばれた１種又は
２種以上の水溶性化合物である。このような水溶性有機
物の具体例としては、エチレングリコール、プロピレン
グリコール、ジエチレングリコール、ジプロピレングリ
コール、トリエチレングリコール、トリプロピレングリ
コール、テトラエチレングリコール、ポリエチレングリ
コール、ポリプロピレングリコール、ポリオキシエチレ
ン・ポリオキシプロピレンブロック（又はランダム）共
重合体等のグリコール系化合物；グリセリン、ジグリセ
リン、トリグリセリン、テトラグリセリン、ポリグリセ
リン等のグリセリン系化合物が挙げられる。これらは１
種で用いても良いが、２種以上の混合物で用いることも
可能である。前記一般式（１）で表わされるグリコール
系化合物及び前記一般式（２）で表わされるグリセリン
系化合物は、得られるスラリー中の吸水性樹脂の沈降を
防止するのに好適な高粘性と高密度が得られる。The water-soluble organic substance in the present invention has the general formula (1) (However, l and m are each independently 0 or 1-1,
000 is an integer, l + m is an integer of 1 to 1,000. ) And a glycol-based compound represented by the general formula (2) (However, n is an integer of 1 to 20.) One or more water-soluble compounds selected from the glycerin-based compounds represented by. Specific examples of such water-soluble organic substances include ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, triethylene glycol, tripropylene glycol, tetraethylene glycol, polyethylene glycol, polypropylene glycol, polyoxyethylene / polyoxypropylene block. Glycerin compounds such as (or random) copolymers; glycerin compounds such as glycerin, diglycerin, triglycerin, tetraglycerin, and polyglycerin. These are 1
Although it may be used as a seed, it is also possible to use a mixture of two or more kinds. The glycol-based compound represented by the general formula (1) and the glycerin-based compound represented by the general formula (2) have high viscosity and high density suitable for preventing sedimentation of the water absorbent resin in the obtained slurry. can get.
本発明で使用される分散媒の組成は、水溶性有機物40
〜95重量％および水５〜60重量％である。水溶性有機物
が40重量％未満で水が60重量％を越える場合には、吸水
性樹脂を混合するとゲル化してしまい流動性のあるスラ
リーが得られない。また、水溶性有機物が95重量％を越
え水が５重量％未満の場合には、得られたスラリー中の
吸水性樹脂が沈降し易くなり、また沈降して生成したケ
ーキが固く分散し難いものとなるためにポンプ輸送が困
難となる。The composition of the dispersion medium used in the present invention is 40% water-soluble organic matter.
~ 95 wt% and water 5-60 wt%. When the water-soluble organic substance is less than 40% by weight and the water content exceeds 60% by weight, mixing with the water-absorbent resin causes gelation and a fluid slurry cannot be obtained. If the water-soluble organic matter exceeds 95% by weight and the water content is less than 5% by weight, the water-absorbent resin in the obtained slurry is likely to settle, and the cake produced by the settling is hard and difficult to disperse. Therefore, pumping becomes difficult.
本発明で用いられる吸水性樹脂としては特に制限な
く、例えばデンプン−アクリロニトリルグラフト重合体
の加水分解物、デンプン−アクリル酸グラフト重合体の
中和物、アクリル酸エステル−酢酸ビニル共重合体のケ
ン化物、架橋ポリビニルアルコール変性物、ポリアクリ
ル酸塩架橋体、架橋イソブチレン−無水マレイン酸共重
合体、スルホン酸基含有モノマーの架橋重合体等があげ
られる。これらの中でもゲル強度に優れているという点
でポリアクリル酸塩架橋体が特に好ましく、また耐塩性
に優れているという点でスルホン酸基含有モノマーの架
橋重合体が特に好ましい。The water absorbent resin used in the present invention is not particularly limited, and examples thereof include a hydrolyzate of a starch-acrylonitrile graft polymer, a neutralized product of a starch-acrylic acid graft polymer, and a saponified product of an acrylic acid ester-vinyl acetate copolymer. , Crosslinked polyvinyl alcohol modified products, polyacrylic acid salt crosslinked products, crosslinked isobutylene-maleic anhydride copolymers, crosslinked polymers of sulfonic acid group-containing monomers, and the like. Among these, a polyacrylate crosslinked product is particularly preferable in terms of excellent gel strength, and a crosslinked polymer of a sulfonic acid group-containing monomer is particularly preferable in terms of excellent salt resistance.
本発明で用いられる吸水性樹脂の形状や大きさは、特
に制限ないが、得られるスラリーの流動性を考慮した場
合、平均粒子径１μｍ〜5mmの粉末が好ましい。The shape and size of the water-absorbent resin used in the present invention are not particularly limited, but in consideration of the fluidity of the obtained slurry, powder having an average particle diameter of 1 μm to 5 mm is preferable.
分散媒に対する吸水性樹脂の混合使用量は、分散媒10
0重量部に対して吸水性樹脂５〜300重量部である。300
重量部を越えると得られるスラリーの流動性が低下し、
また５重量部未満では得られる吸水性樹脂スラリーを各
種用途に応用した際の効果が不充分となる。The mixing amount of the water-absorbent resin to the dispersion medium is 10
It is 5 to 300 parts by weight with respect to 0 parts by weight. 300
When it exceeds the weight part, the fluidity of the obtained slurry decreases,
On the other hand, if the amount is less than 5 parts by weight, the effect of applying the resulting water absorbent resin slurry to various uses becomes insufficient.
水溶性有機物、水及び吸水性樹脂の混合順序に制限は
ないが、水溶性有機物と水の混合物に吸水性樹脂を加え
る方法が作業性の点で特に好ましい。The order of mixing the water-soluble organic substance, water and the water-absorbent resin is not limited, but a method of adding the water-absorbent resin to the mixture of the water-soluble organic substance and water is particularly preferable from the viewpoint of workability.
本発明の吸水性樹脂スラリーには、さらに流動性を改
良したり粘度を上げるために、デンプン、グアガム、キ
サンタンガム、カルボキシメチルセルロース、メチルセ
ルロース、ヒドロキシエチルセルロース、水溶性アクリ
ル系ポリマー、ポリビニルアルコール及びその変性物等
の水溶性高分子や、ベントナイト、粘土等の無機物質を
加えることも可能である。In the water-absorbent resin slurry of the present invention, in order to further improve the fluidity and increase the viscosity, starch, guar gum, xanthan gum, carboxymethyl cellulose, methyl cellulose, hydroxyethyl cellulose, water-soluble acrylic polymer, polyvinyl alcohol and its modified products, etc. It is also possible to add the water-soluble polymer and the inorganic substance such as bentonite and clay.
（発明の効果） 本発明の吸水性樹脂スラリーは、スラリー中の吸水性
樹脂の沈降速度が小さく流動性が良いために、そのポン
プ輸送が容易である。また、スラリー中に混合されてい
る水の量が、混合使用されている吸水性樹脂の重量に対
して非常に少ないので、吸水性樹脂の吸水能力をほとん
ど低下させることがない。(Effect of the invention) The water-absorbent resin slurry of the present invention is easy to pump because the water-absorbent resin in the slurry has a low sedimentation rate and good fluidity. Further, since the amount of water mixed in the slurry is very small with respect to the weight of the water absorbent resin mixed and used, the water absorbing ability of the water absorbent resin is hardly reduced.
したがって、本発明の吸水性樹脂スラリーは、各種用
途分野への吸水性樹脂の供給方法として有用であり、例
えば土木、建築、消防等の用途に広く使用できる。特
に、シールド工法、推進工法等の土木工事分野では掘削
土砂の搬送、間隙水の流入防止、逸泥防止、泥水固化
等、消防分野では水損防止等の目的に有用である。Therefore, the water-absorbent resin slurry of the present invention is useful as a method for supplying the water-absorbent resin to various fields of use, and can be widely used for applications such as civil engineering, construction, and fire fighting. In particular, it is useful for the purpose of transporting excavated soil, prevention of inflow of pore water, prevention of sludge, solidification of mud, etc. in the field of civil engineering such as shield construction method and propulsion method, and prevention of water damage in the field of firefighting.
（実 施 例） 以下、実施例により本発明を詳細に説明するが、本発
明の範囲がこれらの実施例にのみ限定されるものではな
い。(Examples) Hereinafter, the present invention will be described in detail with reference to examples, but the scope of the present invention is not limited only to these examples.
参考例 １ アクリル酸ナトリウム74.95モル％、アクリル酸25モ
ル％およびトリメチロールプロパントリアクリレート0.
05モル％からなるアクリル酸塩系単量体の40％水溶液40
0gを、過硫酸アンモニウム0.05gおよび亜硫酸水素ナト
リウム0.01gを用いて窒素雰囲気中50〜80℃で静置重合
し、ゲル状含水重合体を得た。このゲル状含水重合体を
180℃の熱風乾燥器で乾燥後、ハンマー型粉砕機で粉砕
し、20メッシュ標準篩で篩分けして、20メッシュ通過物
（以下、これを吸水性樹脂（１）という。）を得た。Reference Example 1 Sodium acrylate 74.95 mol%, acrylic acid 25 mol% and trimethylolpropane triacrylate 0.1.
40% aqueous solution of acrylate monomer consisting of 05 mol% 40
0 g of ammonium persulfate (0.05 g) and sodium bisulfite (0.01 g) were subjected to static polymerization at 50-80 ° C in a nitrogen atmosphere to obtain a gel-like hydropolymer. This gel water-containing polymer
After drying with a hot air dryer at 180 ° C., it was crushed with a hammer crusher and sieved with a 20-mesh standard sieve to obtain a 20-mesh pass product (hereinafter referred to as water-absorbent resin (1)).
参考例 ２ 500mlの円筒形セパラブルフラスコに２−スルホエチ
ルメタクリレートのナトリウム塩21.6g（0.10モル）、
メタクリル酸21.5g（0.25モル）、メタクリル酸ナトリ
ウム70.2g（0.65モル）、N,N−メチレンビスアクリルア
ミド0.92g（0.006モル）及び水170gを仕込み、攪拌して
均一に溶解させた。窒素置換した後、湯浴で40℃に加熱
し、10％過硫酸アンモニウム水溶液1.0gおよび１％Ｌ−
アスコルビン酸水溶液0.5gを添加し、攪拌を停止して重
合させた。重合開始後発熱し、30分後に95℃まで上昇し
た。重合系の温度が下がり始めたのを確認した後、湯浴
を90℃に上昇させ、更に１時間加熱した。得られた高分
子架橋体の含水ゲルを細分化した後、150℃の熱風乾燥
器で３時間乾燥後に粉砕し、20メッシュ標準篩で篩分け
して、20メッシュ通過物（以下、これを吸水性樹脂
（２）という。）を得た。Reference Example 2 21.6 g (0.10 mol) of sodium salt of 2-sulfoethyl methacrylate in a 500 ml cylindrical separable flask,
21.5 g (0.25 mol) of methacrylic acid, 70.2 g (0.65 mol) of sodium methacrylate, 0.92 g (0.006 mol) of N, N-methylenebisacrylamide and 170 g of water were charged and stirred to uniformly dissolve. After substituting with nitrogen, heat to 40 ° C in a water bath and 1.0 g of 10% ammonium persulfate aqueous solution and 1% L-
0.5 g of an ascorbic acid aqueous solution was added, stirring was stopped, and polymerization was performed. After the initiation of polymerization, heat was generated, and after 30 minutes, the temperature rose to 95 ° C. After confirming that the temperature of the polymerization system had begun to decrease, the temperature of the hot water bath was raised to 90 ° C., and the system was further heated for 1 hour. The hydrogel of the crosslinked polymer obtained is subdivided, dried in a hot air dryer at 150 ° C for 3 hours, then pulverized and sieved with a 20-mesh standard sieve to obtain a 20-mesh pass product (hereinafter, water-absorbed product). Resin (2) was obtained.
参考例 ３ 500mlの円筒形セパラブルフラスコに２−アクリルア
ミド−２−メチルプロパンスルホン酸アンモニウム157g
（0.70モル）、アクリルアミド21.3g（0.30モル）、N,N
−メチレンビスアクリルアミド0.31g（0.002モル）およ
び水270gを仕込み、攪拌して均一に溶解させた。その
後、参考例２と同様に重合、乾燥、粉砕、篩分けを行
い、20メッシュ標準篩通過物（以下、これを吸水性樹脂
（３）という。）を得た。Reference Example 3 Ammonium 2-acrylamido-2-methylpropanesulfonate (157 g) in a 500 ml cylindrical separable flask.
(0.70 mol), acrylamide 21.3 g (0.30 mol), N, N
-Methylenebisacrylamide 0.31 g (0.002 mol) and water 270 g were charged and stirred to dissolve uniformly. Then, polymerization, drying, pulverization and sieving were carried out in the same manner as in Reference Example 2 to obtain a 20-mesh standard sieve passed product (hereinafter referred to as water-absorbent resin (3)).
実施例１〜７および比較例１〜２ 第１表に示した水溶性有機物および水を第１表に示し
た使用量で混合して分散媒を調製した。ここへ参考例１
〜３で得られた吸水性樹脂（１）〜（３）のそれぞれを
第１表に示した使用量で混合し、攪拌して吸水性樹脂ス
ラリーを得た。Examples 1 to 7 and Comparative Examples 1 to 2 Water-soluble organic substances shown in Table 1 and water were mixed in the amounts shown in Table 1 to prepare dispersion media. Reference example 1
Each of the water-absorbent resins (1) to (3) obtained in Nos. 3 to 3 were mixed in the amounts shown in Table 1 and stirred to obtain water-absorbent resin slurries.
このようにして得られた吸水性樹脂スラリーの性能に
ついて、スラリー中の吸水性樹脂の沈降性および沈降に
よって生成したケーキの流動性を以下に示す評価方法に
よって調べ、それらの結果を第１表に示した。With respect to the performance of the water absorbent resin slurry thus obtained, the sedimentation property of the water absorbent resin in the slurry and the fluidity of the cake formed by the sedimentation were examined by the following evaluation methods, and the results are shown in Table 1. Indicated.
沈 降 性 吸水性樹脂スラリーの調製に用いたものと同じ分散媒
200mlを最大目盛200mlのメスシリンダー（液深19.2cm）
に入れ、その上から吸水性樹脂スラリーを0.2g静かに滴
下した。吸水性樹脂スラリー中の吸水性樹脂がメスシリ
ンダーの底面に到達するまでの時間を計り、沈降性の目
安とした。Sinkability The same dispersion medium used to prepare the water absorbent resin slurry.
200 ml graduated cylinder with a maximum scale of 200 ml (liquid depth 19.2 cm)
Then, 0.2 g of the water absorbent resin slurry was gently added dropwise from above. The time taken for the water-absorbent resin in the water-absorbent resin slurry to reach the bottom surface of the graduated cylinder was measured and used as a measure of sedimentation.
沈降ケーキの流動性 吸水性樹脂スラリーを10分間攪拌した後、１時間静置
した。沈降によって生成したケーキの流動性を目視で流
動性の良いものからケーキが固く流動性のほとんどない
ものの順に５→１の５段階評価した。Fluidity of sedimentation cake The water-absorbent resin slurry was stirred for 10 minutes and then left to stand for 1 hour. The fluidity of the cake formed by sedimentation was visually evaluated in the order of 5 → 1 in order from the one having good fluidity to the one having hard cake and little fluidity.
Claims (1)
重量％からなる分散媒100重量部に吸水性樹脂を５〜300
重量部混合してなり、前記水溶性有機物が、一般式
（１） （ただし、ｌおよびｍはそれぞれ独立に０または１〜1,
000の整数、ｌ＋ｍは１〜1,000の整数である。） で表わされるグリコール系化合物および一般式（２） （ただし、ｎは１〜20の整数である。） で表わされるグリセリン系化合物から選ばれた１種又は
２種以上である、吸水性樹脂スラリー。1. Water-soluble organic matter 40 to 95% by weight and water 5 to 60
5 to 300 parts by weight of water-absorbent resin in 100 parts by weight of dispersion medium
The water-soluble organic substance is a mixture represented by the general formula (1) (However, l and m are each independently 0 or 1-1,
000 is an integer, l + m is an integer of 1 to 1,000. ) And a glycol-based compound represented by the general formula (2) (However, n is an integer of 1 to 20.) A water-absorbent resin slurry, which is one or more selected from the glycerin-based compounds represented by.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22026487A JPH0819402B2 (en) | 1987-09-04 | 1987-09-04 | Water absorbent resin slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22026487A JPH0819402B2 (en) | 1987-09-04 | 1987-09-04 | Water absorbent resin slurry |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6465186A JPS6465186A (en) | 1989-03-10 |
| JPH0819402B2 true JPH0819402B2 (en) | 1996-02-28 |
Family
ID=16748457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22026487A Expired - Fee Related JPH0819402B2 (en) | 1987-09-04 | 1987-09-04 | Water absorbent resin slurry |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0819402B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6233299B1 (en) * | 1998-10-02 | 2001-05-15 | Japan Nuclear Cycle Development Institute | Assembly for transmutation of a long-lived radioactive material |
| JP4555911B2 (en) * | 2002-10-29 | 2010-10-06 | ハイモ株式会社 | Low noise, low vibration sediment pump additive and sediment pump pumping method |
| JPWO2019039426A1 (en) * | 2017-08-21 | 2020-10-22 | 住友精化株式会社 | Water-absorbent resin dispersion, water-absorbent resin coating and its manufacturing method |
-
1987
- 1987-09-04 JP JP22026487A patent/JPH0819402B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6465186A (en) | 1989-03-10 |
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